arbitrary vs null

arbitrary

adj
  • Not representative or symbolic; not iconic. 

  • Determined by independent arbiter. 

  • Determined by impulse rather than reason; heavy-handed. 

  • Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random. 

  • Any, out of all that are possible. 

noun
  • Anything arbitrary, such as an arithmetical value or a fee. 

null

adj
  • Absent or non-existent. 

  • Insignificant. 

  • Having no validity; "null and void". 

  • Causing a complete loss of gene function; amorphic. 

  • Of the null set. 

  • Of or comprising a value of precisely zero. 

  • Neutral. 

noun
  • The null character; the ASCII or Unicode character (␀), represented by a zero value, which indicates no character and is sometimes used as a string terminator. 

  • Zero quantity of expressions; nothing. 

  • One of the beads in nulled work. 

  • A non-existent or empty value or set of values. 

  • Something that has no force or meaning. 

  • The attribute of an entity that has no valid value. 

  • The null hypothesis. 

verb
  • To crack; to remove restrictions or limitations in (software). 

  • To return to the null position, setting, etc. 

  • To form nulls, or into nulls, as in a lathe. 

How often have the words arbitrary and null occurred in a corpus of books? (source: Google Ngram Viewer )